Window-lock.



R. W. KOCH.

WINDOW LOCK.

APPLICATION FILED ocr.1s.19ns.

Patented July 25, 1916.

C 0 1/ a 9 M 0,9 .u Q M M 1 m M A w 1 W M W K eflb (707 "/665 RUDOLPH W. KOCH, OF MILWAUKEE, WISCONSIN.

WINDOW-LOCK.

Specification of Letters Patent.

Patented July 25, 1916.

Application filed October 18, 1915. Serial No. 56,409.

To all whom it may concern:

Be it known that l, RUooLPrr W. Koo/H, a citizen of the United States, residing at the city of Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in lVindow-Locks, of which the following is a specification.

My invention relates to improvements in window locks, and it pertains more especially to that class of windows which are used in basements, and are suspended from their upper edges from the window frame.

The object of my invention is to provide a simple and efficient device for locking and holding the window at any desired point of adjustment as the lower edge of the same is drawn forwardly and upwardly in the act of opening the same, and in which the locking and holding mechanism is adapted as the window is thrown wide opento engage and hold the holding bolt out of contact with its supporting bracket, whereby the window may be readily closed simply by dropping the same to its vertical position within the window frame, and whereby as soon as the window is brought to the vertical position the latch which holds the bolt will be thrown out of engagement with such bolt, whereby the device is in position to again hold the window at any desired point of adjustment as the same is being opened.

My invention is further explained by reference to the accompanying drawing, in which Figure 1 represents a perspective view of one corner of a window and window supporting frame provided with my locking mechanism. Fig. 2 is a horizontal section drawn on line as, m of Fig. 1 showing the window in its closed position. Fig. 3 is a similar view to that shown in Fig. 2 showing the window partially open and also showing the holding bolt in engagement with the supportin bracket. Fig. 4 is a similar view to that shown in Fig. 3 showing the window in its extreme raised position and the locking bolt held out of contactwith the supporting bracket, and Fig. 5 is a vertical section of the lock mechanism drawn on line y, y of Fig. 3.

Like parts are identified by the same reference numerals throughout the several views.

1 is a window sash and 2 a window frame.

3 represents one of the hinges by which the window sash is suspended from the frame 2, and attached to the side of the window frame is a bracket comprising the circular member 4 provided with a plurality of apertures 5, 5, horizontal member 6 and vertical fastening plate 7.

The apertures 5 are preferably formed by stamping the circular member so as to form a plurality of tongues 6, which are severed from the main bodv of the circular member on. three sides, but are connected with the same at the point 7, said tongues being bent back so as to form sliding bearings for the lccking bolt 8 as said bolt slides from one aperture to another. The locking or supporting bolt 8 is provided with an inclosure 9 of ordinary construction, and said bolt is thrown forward by the recoil of the spiral spring 10 which is interposed between the shoulder 11 of said bolt and the partition 12, the spring being adapted by its recoil. to throw the bolt forward and outward as indicated in Figs. 3 and 5, whereby the tapered end 13 of said bolt is adapted as the window is raised to engage and rest upon the lower side of one of the apertures 5. Attached to one side of the bolt 8 is a pin 14 and said bolt inclosing case 9 is provided with a slot 15 for the reception of said pin, whereby said pin is moved forwardly and backwardly with said bolt as the latter is brought into and out of enga ement with the circular member 4.

17 is a bolt retaining latch which is pivotally secured to the side of the bolt inclosure by the pin 18. The latch 17 is provided with a shoulder 19, which shoulder is adapted to engage the projecting end of the pin 14, whereby the sliding bolt 8 is held out of contact with the circular bracket 4, as shown in Fig. 4. When, however, the window is brought to the closed position shown in Fig. 2 said latch 17 is brought in contact with the shoulder 20, as shown in Figs. 1 and 2 and said latch is raised, whereby said bolt 8 is free to be thrown forward by the recoil of said spiral spring 10, when it is free to engage in any one of the several apertures 5 formed in said circular bracket. The bolt inclosing case 9 is provided with a flange 9, of ordinary construction, and said case and flange are secured to the window sash 1 by a plurality of screws 22.

Thus, it will be obvious that when the window sash 1 is closed as shown in Figs. 1 and 2 the latch 19 will be raised and the bolt will be free to engage the bracket at any point of adjustment corresponding with structedly to its closed position shown in said Figs. 1 and 2.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is 2-- 1. In a device of the describedclass, the combination'of a window frame, a bracket provided with a series of stops secured to said frame, a window sash, means for pivotally suspending said window sash from said frame, a bolt slidably attached to said window sashand adapted as the latter is raised to automatically engage any one of the seriesof stops of said bracket, means for holding said bolt out of engagement 1 with said bracket as the window sash is closed, and means for automatically releasing said bolt from engagement with said holding means as the window sash is brought to its closed position.

2. In a device of the described class, the combination of a window frame, a bracket provided with a series of stops secured to said frame, a window sash, means for pivotally suspending said window sash from said frame, a bolt slidably attached to said window sash and adapted as the'latter is raised to automatically engage any one of the series of stops of said bracket, a pin attached to the side of said belt, a bolt inclosing case, a latch pivotally connected with said case provided with a shoulder, said shoulder being adapted as the'window sash is opened to be automatically thrown into engagement with said bolt and to hold said bolt out of contact with said bracket as said window sash is closed.

3. In a device ofthe described class, the combination of a, window, frame, a bracket provided with a series of stops secured to said frame, a window sash, means for pivotally suspending said window sash at its upper edge from said frame, a bolt slidably attached to said window sash and adapted as the latter is raised to automatically engage any one of the series ofstops of said bracket, a pin attached to the side of said bolt, a bolt inclosing case, a latch pivotally connected with said case provided with a shoulder, said shoulder being adapted as the window sash is opened to beautomatically thrown into engagement with said bolt and to hold said bolt out of contact with said bracket as said window sash is closed, said latch being also adapted to contact with a stop as said window sash is closed, whereby said bolt is automatically released from said holding means preparatory to again holding said window sash as the latter is raised.

In testimony whereof I afiix my signa- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

